Sidewalk door



Patented May 29, 1923.

UNITED- STATES PATEQNTIOFYFICE...

MARION J. BOSS, OF'LYNBROOK, NEW YORK, AND GEORGE T. ATKINSON,'QF'PHIL.A- I

' DELPHIA, PENNSYLVANIA. a

SIDEWALK noon.

Application filed May 9,

To all whom it may concern:

GEORGE T. ATKINSON, citizens of the United States, residing at Lynbrookand Philadelphia, respectively, in the counties of Nassau andPhiladelphia and States of New York and Pennsylvania, respectively, haveinvented new and useful Improvements in Side walk Doors, of which thefollowing is a specification. v

This invention relates to doors, and particularly to an improvement inthe construction of side-walk doors. 1 v

Some ofthe principal objects'and advantages sought to be accomplished bytheinvention are; to provide a door construction of this class. theseveral parts ofwhich are adapted to lie substantially flush with thesurface in which it is mounted; to provide means for hinging the door toits frame, which is so constructed as to conceal and protect the sameagainst the elements and which at the same time eliminates dangerous andunsightly'projections and obstructions on the side-walk; to provide aside-walk door and frame structure, including means constituting a partof one, of the doors, which .is adapted to support the meeting edges ofthe doors and co -acts therewith-to render the same. water-tight andweatherproof at this point; and to provide a door structure of the classdescribed which is simple in construction, strong, durable and effectivefor the purposes for which it is de signed. v

WVith these and other objects in view, which will be more apparenthereafter, reference is made to the following description, claims andaccompanying drawings, forming a part of this application.

In .the drawings Figure 1 is a plan View of the invention.

Figure 2 is a transverse sectional View 'therethrough takenapproximately on the line 2-2 of Figure 1. a

Figure 3 is a sectional view on the line 3-3 of Figure 1.

Referring to the drawings by characters of reference, 10 designates theside-walk which is provided with a door opening 11, in which iscountersunk a frame'12, of substantially right angular. construction incross section. The upper surface 13 of the horizontal portion of theframe is slightly 1921. Serial No. 467,906.

beveled and inclines downwardly towardlits outer edgesv in order toprovide means for draining waterwhich may fall uponthe doorway. Theupper surfaceqis also provided with a plurality of transverse chan nels14 which serve to'drain water which might otherwise collect between theinner edges of the frame and the doors Theangular formation of the frameis such as to provide depending flanges 15 which extend downwardly fromthe inner edges the side rails of .theportions 12 and; horizontalextensions 16 projects inwardly therefrom adjacent the upper portions'ofsaid flanges. Said extension .beingon substantially the samehorizontal plane as the side-walk. The said extensions 16 are providedwith grooves 17 substantially semi-circular in cross section,havingrestricted throatswith 'oppositely beveled side walls'18...-'Suitable packing elements 19, such ashempropeor other material whichexpand when subjected to the action of water or moisture, are disposedwithin the grooves 17. Housings 20 are formed on and: depend from theunder-subface .of the frame;12 in spacedrelationat two of the opposingside rails thereof, and the flanges 15 are cut awayas at 20 to pro videcommunication between the housings and the interior of the door openingfor a purpose to be hereafter set'forth- The doors 21 and 22 arerespectively hinged to the opposite side rails j of the frame on whichhousings 20 are formed, the hinges which} operat-ively connect the.doors with the frame, include a horizontal portion 23 which is rivetedor otherwise secured to the under surface of the doors. The innerextremity of the portion 23 isv curved outwardly as at 24 where it isconnected with the straight portion 25, the free end of which isapertured for the reception of the hinge pin 26, passed transverselythrough the side walls of the housings 20. The curve of'the portions 24which are concentric to the pin 26in order to permit of the freemovementof said portions around the ex tensions 16, operate through thecut-away portions 20 of the flanges. The doors are provided adjacenttheir outer edges with depending sealingflanges 27, the opposite sidesof which are beveled as at 28 to snugly fit the beveled faces of therestricted throat 18 of the groove in the extension 16.

' bar is beveled at its free edge as illustrated at 31, and said beveledportion is adapted to co-act with the oppositely beveled portions 32provided on the 'door frame 12. A portion of the bar 29 underlies thedoor 21 and said underlying portion is provided with the groove 32 ofsubstantially circular formation in cross section and having arestricted throat provided with oppositely beveled faces 33. A suitablepacking 34 is received by the groove 32 and the door 21 is provided witha depending sealing flange 35 having oppositely beveled faces 36 whichare adapted to snugly fit the restricted throat of the groove 32. Fromthe foregoing description it will be seen that a sidewalk door isprovided which is practically flush with the sidewalk and whicheffectively excludes the possibility of the entrance of moisture whenthe doors have been closed.

l Vhile there has been illustrated and described a single and preferredembodiment of the invention, the same is merely illustrative of onemethod in which the invention may be'reduced to practice and nolimitation is made to the exact details of construction but such changesand alterations as fall within the scope of the appended claims may beresorted to when found expedient.

What is claimed as new is:

1. In a device of the class described, the combination of 'a frameworkhaving a counter-sunk opening and formed with ways from the margin ofsaid framework to the bottom of said countersink, doors mounted so as toseat themselves in said opening and on the shoulder formed by thecountersink,

and sealing means between said doors and said shoulder.

2. A device of the class described comprising a framework having acounter-sunk opening forming a shoulder against which a door may restand be supported, said shoulder formed with a groove having guidesurfaces inclined toward said groove, packing in said groove, doorshingedly mounted to said framework, and means on said doors andcontrollable by said guide surfaces for co-operating with said grooveand packing to effect a water-tight seal.

3. Door construction comprising, a door setting embodying a frame havingdrainpassages therein, counter-sunk and provided with a marginalpacking-channel entirely along the insides of said frame, a pair ofdoors hingedly mounted to the frame, said doors having a flange along atleast three edges thereof and arranged in a manner to be received bysaid channel, the said doors fitting in said frame flush with the uppersurfaces thereof.

4. Door construction comprising, a door setting embodying a frame havingdrain- 1 passages therein, an inner marginal packing-channel and beingcounter-sunk to provide door rests, doors hinged to said frame, asupporting bar having a packing-channel therein attached to the free endof one of said doors, one of said doors having a marginal flange alongthree edges thereof, and the other of said doors having a marginalflange along the four edges thereof, the

flange of said first door being received in the packing-channel of saidframe, and the flange of said last mentioned door being received in partin the packing-channel of said frame and in part in the packing-chan nelof saidbar when the doors are in closed position.

In testimony whereof we have aflixed our signatures.

MARION J. ROSS. GEORGE T. ATKINSON.

